Norad ID: 21553
| Spacetrack Directory Name | LOSAT X |
| Orbit launches |
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| Deorbitation date |
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| Days in orbit | 134 |
| Country/organisation of origin | USA (US) |
| Starting point | AFETR (Kennedy Space Center/Cape Canaveral, USA) |
LOSAT X, 21553 was a payload satellite owned by SDIO (US) that was launched on Thu, 04 Jul 1991 UTC via a DELTA 7925 launch vehicle from the Air Force Eastern Test Range (AFETR). Payloads include a variety of satellites, spacecraft, and rockets equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.